package general.appClass;


import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;

import sqlClass.daoClass.DaoGet;

/**
 * Servlet implementation class LoginApp
 */
@WebServlet("/LoginApp")
public class LoginApp extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public LoginApp() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		this.doPost(request, response);
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request,
			HttpServletResponse response) throws ServletException, IOException {
		this.login(request, response);
	}

	private void login(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		String name = request.getParameter("name");
		String pass = request.getParameter("pass");

		if (name == null || name.equals("") || pass == null || pass.equals("")) {
			String url = response.encodeURL("/index.jsp");
			RequestDispatcher dispatcher = getServletContext()
					.getRequestDispatcher(url);
			dispatcher.forward(request, response);
		}

		try {
			if (DaoGet.testUser(SystemInfo.getConn(request),name,pass)) {
				HttpSession session = request.getSession();
				session.setAttribute("usr", name);
				
				//Initiate System Information like DB Connection .. 
				SystemInfo.init(request);
				
				String url = response.encodeURL("/index.jsp");
				RequestDispatcher dispatcher = getServletContext()
						.getRequestDispatcher(url);
				dispatcher.forward(request, response);
			} else {
				request.setAttribute("Quelle", "connect");
				request.setAttribute(
						"Error",
						"Der Login hat nicht funktioniert! Bitte geben Sie richtig Benutzername und Passwort ein.");
				String url = response.encodeURL("/errorInfo.jsp");
				RequestDispatcher dispatcher = getServletContext()
						.getRequestDispatcher(url);
				dispatcher.forward(request, response);
			}
		} catch (SQLException e) {
			e.printStackTrace();
		}
	}

}
